Figure 1 : C-arm used to obtain videofluoroscopic (VFC) images of a moving knee joint.

Note the subject is seated in proximity of the image intensifier with a hanging leg. When ordered, the patient extends the leg while obtaining VFC images.

Simini et al.Medical Imaging and Radiology  2017 5:4DOI : 10.7243/2054-1945-5-4